ケイ酸マグネシウムの表面物性に及ぼす製造条件の影響
1973 年 22 巻 238 号 p. 645-648
詳細
1973 年 22 巻 238 号 p. 645-648
In order to examine the effects of several manufacturing conditions on the surface physical properties of magnesium silicates, five kinds of magnesium silicates were produced by four different methods.
SiO2/MgO mole ratio, apparent specific volume, specific surface area, acid strength and acidity at pKa=+1.5 and pKa=+3.3 were measured. It was found that these physical properties were related to the adsorptive power for dyes (M·B, M·G, S, B·M·G) and to pH condition during manufacturing of magnesium silicates.
Magnesium silicate with the strongest adsorptive power had the following properties: (1) larger SiO2/MgO ratio, (2) smaller apparent specific volume and (3) smaller specific surface area.
Acid strength and acidity of the surface of magnesium silicates had no relation to the adsorptive power for dyes.
